BS 7720:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Specification for non-biological sterilization indicators equivalent to the Bowie and Dick test
Hardcopy , PDF
15-01-2001
English
15-12-1995
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Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 General system requirements
5 Indicator system format
6 Performance
7 Packaging, labelling and instructions for use
Annexes
A (normative) Method of determining strength after
steam sterilization
B (normative) Method of estimating the visual difference
between the colour of the substrate and the changed
(or unchanged) indicator reagent on the substrate
C (normative) Method of demonstrating uniform colour
change on exposure to dry saturated steam
D (normative) Method of compariang the sensitivity of
the alternative pack system to the standard test
pack system to the standard test pack when air is
injected into the steam exposure apparatus
E (normative) Method of comparing the sensitivity of the
alternative pack system to the standard test pack
when residual air is allowed to remain within the
steam exposure apparatus
F (normative) Method of determining the sensitivity of
the indicator system under exposure to dry heat
G (normative) Method of demonstrating the shelf life of
the product
H (normative) Steam exposure apparatus
J (normative) Standard test pack
K (informative) Air injection system
L (normative) Standard test cycles
Table
B.1 Values of spectral product required of the
reflectance photometer at the given values of
wavelength and illuminance
Figures
1 Example of a suitable format for additional marking
K.1 Air injection apparatus
L.1 Example of sub-atmospheric pulsing cycle
L.2 Example of sub- and super-atmospheric pulsing cycle
List of references
For use as an alternative to the Bowie and Dick test for steam sterilizers for wrapped goods and porous loads.
| Committee |
CH/198
|
| DevelopmentNote |
SUPERSEDES BS 7720 1994. DRAFT FOR COMMENT 92/58870 DC
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| BS EN 28601:1992 | Specification for representation of dates and times in information interchange |
| BS 1384-3:1985 | Photographic density measurements Specification for spectral conditions |
| BS EN ISO 9001:2015 | Quality management systems. Requirements |
| BS EN 22248:1993 | Complete, filled transport packages. Method for determination of resistance to vertical impact by dropping |
| BS EN 20187:1993 | Paper, board and pulps. Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples |
| BS 1384-4:1985 | Photographic density measurements Specification for geometric conditions for reflection density |
| BS 3970-3:1990 | Sterilizing and disinfecting equipment for medical products Specification for steam sterilizers for wrapped goods and porous loads |
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